Romans 2:29

but he is a Jew who is one inwardly; and circumcision is of the heart, spiritual, not literal, whose praise is not of men, but of God.

Romans 4:11

And he received the outward sign of circumcision as a seal of the righteousness of the faith which he had while he was uncircumcised; that he might be the father of all the uncircumcised who have faith, so that righteousness might be put to their account also;

Colossians 2:11

in whom also ye have been circumcised with a circumcision not performed by hand, in putting off the body of the flesh in the circumcision of Christ,

Treasury of Scripture Knowledge

Summary

At that time the LORD said unto Joshua, Make thee sharp knives, and circumcise again the children of Israel the second time.

Bible References

Circumcise

Romans 2:29
but he is a Jew who is one inwardly; and circumcision is of the heart, spiritual, not literal, whose praise is not of men, but of God.
Romans 4:11
And he received the outward sign of circumcision as a seal of the righteousness of the faith which he had while he was uncircumcised; that he might be the father of all the uncircumcised who have faith, so that righteousness might be put to their account also;
Colossians 2:11
in whom also ye have been circumcised with a circumcision not performed by hand, in putting off the body of the flesh in the circumcision of Christ,